Lillia & Pantheon Synergy
Lillia Jungle and Pantheon Support win 52.9% of 2,187 Low Elo games together, +1.4 points vs expected, 2-patch window 26.19-26.20.
Researched on LoL patch 26.20. Tips are written to hold at any rank; stats come from Low Elo ranked games up to patch 26.20.
Why this duo works
Pantheon's targeted Shield Vault(W) gives Lillia a reliable opening to land Watch Out! Eep!(W) at its center. Lillia can then add Lilting Lullaby(R) sleep to extend the pick, with Pantheon holding a burst hit until the sleep is ready to wake for bonus damage.
Playing the duo
Shield Vault(W) stuns one target, giving Lillia time to land Watch Out! Eep!(W) in its center; after Dream-Laden Bough(P) marks the target, Lilting Lullaby(R) can add a sleep window for the pair's follow-up.
How to play as Lillia
Tag the target with Dream-Laden Bough(P), then use Pantheon's Shield Vault(W) stun to center Watch Out! Eep!(W); cast Lilting Lullaby(R) while Dream Dust is active and coordinate the wake-up hit for its bonus damage.
How to play as Pantheon
Use Shield Vault(W) as Lillia's cue for Watch Out! Eep!(W); if she casts Lilting Lullaby(R), wait for the sleep to land before waking the target with your next burst hit.
Sources
These notes come from r/LilliaMains, checked against the champions' abilities.